Caterpillar Performance Handbook, January 2017, SEBD0351-47

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7-16 Edition 47
Hydraulic
Excavators
Specifications
MODEL 312D2 L 312E 312E L
Region Offerings Middle East, Africa, CIS,
Asia Pacific, South America
Europe, Australia,
New Zealand and Polynesia,
Japan
North America, Europe,
Australia, New Zealand
and Polynesia
Engine Power:
ISO 9249 67 kW 90 hp 68 kW 91 hp 68 kW 91 hp
SAE J1349 N/A 68 kW 91 hp 68 kW 91 hp
OperatingWeight* 13 200-
13 900 kg
29,100-
30,640 lb
13 200-
15 700 kg
29,100-
34,620 lb
13 200-
15 700 kg
29,100-
34,620 lb
Bucket Capacity Range (heaped) 0.31-0.76 m 3 0.4-1.0 yd3 0.20-0.76 m 3 0.27-0.99 yd 3 0.20-0.76 m 3 0.27-1.0 yd3
Engine Model 3054C C4.4 ACERT C4.4 ACERT
Emission Standards Tier 2/Stage II Equivalent Tier 4 Interim/Stage IIIB/
Japan 2011 (Tier 4 Interim)
Equivalent
Tier 4 Interim/
Stage IIIB Equivalent
Rated Engine RPM 2200 1800 1800
No. of Cylinders 4 4 4
Bore 105 mm 4.13" 105 mm 4.13" 105 mm 4.13"
Stroke 127 mm 5.00" 127 mm 5.00" 127 mm 5.00"
Displacement 4.4 L 269 in 3 4.4 L 269 in3 4.4 L 269 in3
Max. Implement Hydraulic Pump
Output at Rated RPM 2 × 127 L/min 2 × 34 gpm 2 × 127 L/min 2 × 34 gpm 2 × 127 L/min 2 × 34 gpm
Relief Valve Settings:
Implement Circuits 30 500 kPa 4424 psi 30 500 kPa 4424 psi 30 500 kPa 4424 psi
Travel Circuits 35 000 kPa 5080 psi 35 000 kPa 5076 psi 35 000 kPa 5076 psi
Swing Circuits 23 000 kPa 3340 psi 23 000 kPa 3336 psi 23 000 kPa 3336 psi
Pilot Circuits 4100 kPa 600 psi 4120 kPa 598 psi 4120 kPa 598 psi
Maximum Drawbar Pull 114 kN 25,630 lbf 114 kN 25,628 lbf 114 kN 25,628 lbf
Two Speed Travel
MaximumTravel Speed at Rated RPM Lo: 3.8 km/h 2.4 mph 5.5 km/h 3.4 mph 5.5 km/h 3.4 mph
Hi: 5.6 km/h 3.5 mph
Width of Standard Track Shoe 500 mm 1'8" 700 mm 28" 700 mm 28"
Overall Track Length 3750 mm 12'4" 3750 mm 12'4" 3750 mm 12'4"
Ground Contact Area with Std. Shoe 3.29 m2 5100 in 2 4.2 m2 6600 in 2 4.6 m2 7150 in2
Track Gauge 1990 mm 6'6" 1990 mm 6'6" 1990 mm 6'6"
Fuel Tank Refill Capacity 250 L 66 U.S. gal 250 L 66.04 U.S. gal 250 L 66.04 U.S. gal
Hydraulic System (includes tank) 104 L 27.5 U.S. gal 162 L 42.8 U.S. gal 162 L 42.8 U.S. gal
*Operating weight includes coolant, lubricants, full fuel tank, standard shoes, bucket, medium stick, and operator 75 kg (165 lb).
NOTE:Certain models may not be available in all Sales areas.
Specifications also vary by Sales area.
Contact your Cat dealer for details.